Last-thimble.



No. 813,812. PATENTED FEB. 27, 1906.

` E. S. MORTON.

LAST THIMBLE.

APPLICATION FILED DBO. 9, 1904 @1W mw( lim EPHRAIM S. MORTON, OF BROCKTON, MASSACHUSETTS.

LAST-THIMBLE.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed December 9,1904. Serial No. 236,174.

T0 all whom t may concern:

Be it known that I, EPHRAIM S. MoRToN, of Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Last- Thimbles, of which the following is a specification.

This invention relates to lasts and the thimbles or socket lining-pieces for the jackspindle sockets thereof, and has for its object to provide a device of this character which 'shall be simpler and more eflcient than those now in use. I

The invention consists of a socket-thimble having the features which I shall now proceed to describe and claim.

Of the accompanying drawings, Figure l represents alongitudinal section of a last having my improved socket thimble applied thereto. Fig. 2 represents a transverse section of the same on line 2 2 of Fig. 1. Figs. 3 and 4 representelevations from different sides of the thimble removed from the last. Fig. 5 represents a perspective detail view of the same. Fig. 6 represents a modified form VAof locking-bar or bottom piece having teeth adapted to bite into the wood of the last and hold the bottom piece firmly in place.

The same reference characters indicate the same parts in all the figures.

a represents a last having the usual jackspindle socket b and having a lining-piece or thimble therefor whichv consists of an openended tubular vmember c, preferably formed from a sheet-metal blank rolled into a tubular shape, as illustrated in Fig. 5. In diametrically opposite sides of the tube near the end which becomes the bottom end when it is inserted in the last are formed notches d, the sides of which are inclined and constitute projections e on the end of the tube extending toward each other. A bottom piece f, having its upper side f flattened and its lower surface curved, constituting of the bottom-piece a segment of a cylinder, is adapted to be extended through the notches d and to engage the projections e. Thus the bar can be inserted after the thimble has been placed in the spindle-socket, a transverse hole g being formed in the heel part of the last for that purpose. The bar f is inserted in the hole gand passed through the notches d, its inclined sides being embraced by the projections e. Its ends extend beyond the sides of the tube c and engage the wood of the last to hold the thimble in place, while at the same time its upper flat surface constitutes an extended bearing-piece for the end of the jack-spindle. After the bar is inserted in the transverse opening g it is held in place, and the orifice of the opening is closed by a plug p.

It is not essential that the lower surface of the bar f should be rounded, as the function of the bar could as well be performed if the lower surface were flat, provided only that the sides are inclined to correspond with the inclined sidesy of the notches d in order that the bar may act as a lock for the tube. Such a structure would be within the spiritl of my invention.

Instead of the bar f being entirely smoothsurfaced it may be formed with serrations or teeth on its lower face, as shown in Fig. 6. These teeth are preferably formed each with a side perpendicular to the bottom of the bar and an inclined side extending from the point of one tooth to the base of the next, and the teeth on each side of the center are arranged with their inclinations directed inwardly from the adjacent end of the bar, or, in other words, the teeth all slope toward the middle of the bar. Thus when pressure is brought to bear on the heel of the last against the thimble resting on a jack the teeth will be pressed into the wood of the last and will act both to securely retain the bar in place,.pre ventingits j oggling loose, and also to bind the sides of the last together, resisting tendency of the heel part to split under heavy pressures,

It is obvious that the thimble b may be made either from a rolled blank, as shown, or as a seamless tube.

I claim- 1. A socket-thimble for lasts comprising a tubular member adapted to be inserted in the spindle-socket of a last and formed with locking projections on its inner end, and a transverse piece having a flat upper surface and inclined sides engaged with said locking projections.

2; A socket-thimble for lasts comprising an open-ended lining-piece formed with taf pered openings in opposite sides adjacent one end thereof, the sides of said openings constituting locking projections, and an end piece consisting of a flat-sided bar adapted to be inserted in said openings and engaged by the locking projections.

3. A socket-thimblefor lasts comprising an open-ended tube adapted to be inserted in the spindle-socket of a last and formed with IOO IIO

openings diametrically opposite each other in the sidewalls adjacent one end, and a bottom piece having a flat upper surface and inclined sides extended through the said open- 1n s.

g4. A last having a spindle-socket, a tubular thimble inserted therein having an open bottom end and notches with inclined sides formed in diametrically opposite sides of the thimble at its end, the inclined sides of the notches constituting locking projections extending toward each other, and a bar having a flat upper surface and sides inclined to correspond to the inclination of the 'sides of the notches inserted into a transverse hole in the last and said notches, its sides engaging the locking projections and its ends extending beyond the sides of the thimble and engaging the wood of the last to lock the thimble in place.

5. A last having a spindle-socket, a tubular open-ended thimble inserted therein having dovetail-shaped notches in diametrically opposite sides at its bottom end, the openings of the notches at the end of the thimble being of less width than the interior of the notches, and a bar inserted in a transverse opening in the last intersecting the spindle, the bar having a flat upper surface and inclined sides, its shape in section corresponding to the shape of the notches, the bar being extended' vwith a locking portion, and a socket bottom and thimble locking piece consisting of a bar having a flat upper surface and a segmental lower portion adapted to extend across the heel portion of a last and interlock with said locking portion of the socket-thimble.

7. In a last, a socket-thimble provided with a locking portion, and a socket bottom and thimble locking piece consisting of a bar having a flat upper surface and a segmental lower portion adapted to extend across the heel portion of a last and interlock with said locking portion of the socket-thimble, and being provided in its under part with serrations forming teeth.

In testimony whereof I have a'ixed my signature in presence of two witnesses.

EPHRAIM S. MORTON.

Witnesses:

A. C. RATIGAN, C. F. BROWN. 

